Lock.



R. M. TAKIMOTO.

LOCK.

APPLICATION FILED NOV. 24, 1915.

1,176,327. Patented Mar. 21,1916.

UNITED TATE PATENT @FFIQE.

ROY M. TAKIMOTO, OF SEATTLE, WASHINGTON.

LOCK.

Application filed November 24, 1915.

To all whom it may concern:

Be it known that I, ROY M. TAKIMoTo, a citizen of the United States, residing at Seattle, in the county of King, State of Washington, have invented certain new and useful Improvements in Locks; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to new and useful improvements in looks and particularly to the type of locks generally known as combination locks.

An object of the invention resides in the provision of a lock which is simple in construction and one wherein the combination may be changed a great number of times.

A further object of the invention resides in so constructing the lock that the combination may be changed only when the parts are not in their locking relation.

A further object of the invention resides in the provision of a lockwhich includes two operating handles which are independently adjustable with relation to the locking disks.

With these and other objects in view, such as will appear as my description progresses, my invention comprises the combination and arrangement of parts as set forth in and falling within the scope of the appended claims.

In the drawing: Figure 1 is a perspective view of my device; Fig. 2 is an elevational view with one of the plates and the locking disks which it carries, removed; Fig. 3 is a vertical sectional view, and Fig. 4: is a'fragmental perspective view showing the, lug on one of the plates and the manner in which it cooperates with the slot in the adjacent disk.

Referring to the drawing by reference characters wherein like parts are indicated by like characters throughout the several views:

I have illustrated a lock which includes a casing 1. Extending through the wall 2 of this casing is a shaft 3 on-the inner end of which is mounted,-loosely, a disk 4 and on the outer end of which a dial 5 is secured. One of the end walls of this casing is provided with an opening 6, the purpose of which will later appear. The disk 4 has in its edge a plurality of equally spaced notches Specification of Letters Patent.

Patented Mar. 21, 1916.

Serial No. 63,289.

7 one of which, 8 is considerably larger than the remainder. The face of the disk 4 which is located adjacent the wall 2 of the casing 1 is provided with an arcuate slot 9 into which a pin 10 extends, which pin is formed on and is stationary with the casing 1. The relation of this pin and slot is such that when the disk ft is turned in one direction the notch 8 will be arrested in alinenient with the opening 6 but when the disk is turned in the other direction in a manner which will later appear, the notch will be arrested in a position out of alinement with the said opening. A second and similar disk 11 is mounted face to face with the disk l and is provided with a plurality of notches 12 similar to the notches 7 and one of which notches 13 is of a size equal to that of the notch 8. The disk 11 is provided with an opening 1 1 which is circular in formation and concentric with the disk. It is also provided with a plurality of teeth 15 which form the edge of the opening. A gear 16 is secured to the inner end of the shaft 3 and normally lies within the opening 14 so that its teeth intermesh with the teeth 15 on the disk 11. At this time the faces of the disk hand the gear 16 are flush. The shaft 8, however, is slidable through the wall 2 of the casing 1 so that the inner face of the gear may be moved beyond the inn-er face of the disk 11 and the gear rotated with relation to the disk for a purpose which will later appear. A similar pair of disks 17 and 18 are mounted upon the plate 19 which acts as a cover for the casing 1, the disk 17 being loosely mounted on the shaft 20 on which is a dial 21 similar to the dial 5. This shaft 20 is provided with a gear 22 which meshes with teeth in the disk 18 in a manner similar to that in which the gear 16 meshes with the teeth in the disk 11. lVhen the plate 19 is in place on the casing 1 the disks 11 and 18 are in slightly spaced relation and a coiled spring 23 extends between the gears 16 and 22 so that they are normally pressed apart. A bail 24 is pivoted, at 25, within the casing 1 and is provided with a hook 26 on its free end.

Slidably mounted within the casing 1 and located between the disks 11 and 18 is a locking member 27 which is provided with a lug 28 which extends through the opening 6 in the casing 1 and is further provided with a substantially circular opening 29. This locking member is also provided with a nctch 30 for the reception of the hook 26 on the bail 24. A pin '31 extends .through this locking member and projects from the sides thereof. This pin is so arranged that when all of the notches 8, 13 and the corresponding notches formed in the respective disks 17 and 18 are in registration with each other and are in alinement with the opening 6 in the casing 1, the pin may move into the notches against the tension of a spring 3st which normally tends to force the locking member to such a position that the pin 31 will be located beyond the peripheries of the disks and the opening 29 will be eccentric to the opening in each of the disks 11 and 18 and the gears located in said openings. It will be obvious that when the pin 31 is located in the notches in the disks that the bail 24 may be readily swung about its pivot, as the hook 26 will be disengaged from the notch 30, to open the look, but that when the pin is located beyond the peripheries of the disks the hook 26 will be maintained in the notch 30 and the bail locked.

The notches 12 in the disk 11 and the corresponding nctches 35 in the disk 18 are equal in number and lie in the same radial lines as the teeth on the respective gears 16 and 22. Each of the dials 5 and 21 is provided with an indicating point 37 which cooperates with a second dial 38 upon each face of the casing, these latter dials being divided into parts equal to the number of teeth on the gears.

The notches 7 in the disk 4 and the corresponding notches in the disk 17 are provided so that during the rotation of the disk the pin 31 will, if the member 28 is pushed inwardly, ride from notch to notch and thus it will be impossible to tell when the notch 8 and the corresponding notches in the re maining disks move in alinement with the pin 31.

Now in operating the device assuming that the parts are in the positions shown in the figures or" the drawing, that is, that the bail 2% is in its locked position, the dial 5 is turned in one direction and the turning of this dial will cause the rotation of the disk 4 since the latter is frictionally engaged by the disk 11. This latter disk will be positively turned by the dial 5 because of the fact that the gear 16 is in engagement therewith. When the disk 4: moves a predetermined distance the pin, 10 will arrest its movement so that the notch 8 therein will disks 17 and 18 which correspond to the notches 8 and 13 are in registration with each other and with the notches 8 and 13.

movement of the disks 4 and 11, the slot and pin controlling the movement of the disk 17 being shown in section in Fig. 3 of the drawing and being indicated by the reference characters 39 and 10 respectively. Now when all of these notches are in registration the pin 31 may be pushed into the same by means of the lug 28 and this will allow the hook 26 on the end of the bail 24: to be disengaged from the notch 30 in the locking member.

Now when it is desired to change the combination it may be accomplished by pushing either one or both of the dials 5 and 21 inwardly against the tension of the spring 23 until the gears are disengaged from the teeth on the disks with which they normally intermesh. At this time the gears may be. rotated with relation to the disks, the disks being held, positively, by the pin 31 so that the notches therein in which the pin is engaged are held in alinement with the opening .6. The teeth on thegears may be then engaged with different teeth on the disks and at this time the position of the point on each dial may be noted so that the operator will know the distance to turn each dialin the subsequent operation of the lock. Now this inward movement of the gears is permitted because of the fact that when the 109 pin 31 is located in the-notches the opening 7 29' in the locking member 27 is concentric with the disks and the gears may move into said opening. The inward movement of the gears is, however, prevented when the bail is in its locked position and the pin 31 is located beyond the peripheries of the disks because of the fact that the opening 29 is at this time eccentric with the disks and .in fact overlaps the gears. v

It will thus be seen that a great number of adjustments may be had so that the dis- 7 tance through which each of the dials must be turned in order to permit the bail 24 to be disengaged from the notch 30 may be varied.

While I have illustrated and described a particular embodiment of my invention, it has merely been for the sake of convenience and I do not Wish to be limited to that particular embodiment as it is obvious that numerous changes may be made within the scope of the appended claims.

What I claim is: r i 1. In a lock, the combination with a casing having an open side, of a plate mounted on the casing and closing said side, a shaft extending through the said plate, a second shaft extending through the Wall of the casing, disks loosely mounted on said shafts, 0

- adapted to be located in the notches or beyond the peripheries of the disks.

2. In a lock, the combination with a casing, of a locking member slidably mounted therein and having a pin thereon, a shaft extending through and rotatably mounted in said casing and having a gear thereon, a disk having a centrally located opening in which said gear is normally located, the disk having teeth with which the gear intermeshes and having also a notch in the periphery thereof for the reception of the pin, the locking member being adapted to maintain the gear within the disk when the pin is located beyond the periphery of the disk, but permitting the gear to be moved beyond the disk when the pin is located in the notch. 3. In a lock, the combination with a casing, of a shaft mounted therein, a disk loosely mounted on the shaft and having a notch in the periphery thereof, a second disk rigidly associated with the shaft and also having a notch therein, a pin on the casing, the first disk having an arcuate slot in which said pin lies, and the latter disk being adapted to move the first disk by virtue of its frictional engagement therewith, and a slidably mounted lockingmember having a pin adapted to engage in said notches or'lie beyond the peripheries of the disks.

In testimony whereof, I affix my signature, in the presence of two witnesses.

ROY M. TAKIMOTO. Witnesses: TOURNMATSU WADA, SHINGTARO MIYAZAKI.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. O. 

